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- 6sn7 cv181 to ecc83 12ax7 ecc82 12au7 ecc81 12at7 7025 cv4003 cv4004 5751 vacuum tube amp convert socket adapter 6 3v or 12 6v
6sn7 cv181 to ecc83 12ax7 ecc82 12au7 ecc81 12at7 7025 cv4003 cv4004 5751 vacuum tube amp convert socket adapter 6 3v or 12 6v